Azure Rest api setzen Blob

Question

Ich versuche, einen Blob mit Azure Rest API zu setzen. Ich habe eine "GET" Anfrage erfolgreich gemacht, aber ich hatte Probleme mit "PUT" Anfrage. Wenn ich versuche, "PUT" -Anfrage zu machen, bekomme ich einen 404error (ich habe den gleichen Beitrag in stackoverflow gesehen, aber es hat mir nicht geholfen) .ich bin mir nicht sicher, ob die MessageSignature korrekt ist (ich habe MessageSignaturePut versucht, aber nicht funktioniert). Irgendwelche Vorschläge?

public void UploadBlobWithRestAPI(string uri, DateTime now) 
{ 
    string blobName = "test.txt"; 
    string method = "PUT"; 
    string sampleContent = "This is sample text."; 
    int contentLength = Encoding.UTF8.GetByteCount(sampleContent); 
    string queryString = (new Uri(uri)).Query; 
    string blobContainerUri = uri.Substring(0, uri.Length - queryString.Length); 
    string requestUri = string.Format(CultureInfo.InvariantCulture, "{0}/{1}{2}", blobContainerUri, blobName, queryString); 
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestUri); 
    string nnow = now.ToString("R", System.Globalization.CultureInfo.InvariantCulture); 

    request.Method = method; 
    request.Headers.Add("x-ms-version", "2015-02-21"); 
    request.Headers.Add("x-ms-date", nnow); 
    request.ContentType = "text/plain; charset=UTF-8"; 
    request.Headers.Add("x-ms-blob-type", "BlockBlob"); 
    request.ContentLength = contentLength; 

    using (Stream requestStream = request.GetRequestStream()) 
    { 
     requestStream.Write(Encoding.UTF8.GetBytes(sampleContent), 0, contentLength); 
    } 

    request.Headers.Add("Authorization", AuthorizationHeader(method, now, request, "", "")); 

    using (HttpWebResponse resp = (HttpWebResponse)request.GetResponse()) 
    { 
     MessageBox.Show(resp.StatusCode.ToString()); 
    } 
} 


public string AuthorizationHeader(string method, DateTime now, HttpWebRequest request, 
     string ifMatch = "", string md5 = "") 
{ 
    string MessageSignature; 
    string StorageKey = "xxx"; 
    string StorageAccount = "upgradedevstorage"; 

    MessageSignature = String.Format("{0}\n\n\n{1}\n{5}\n\n\n\n{2}\n\n\n\n{3}{4}", 
     method, 
     (method == "GET" || method == "HEAD") ? String.Empty : request.ContentLength.ToString(), 
     ifMatch, 
     GetCanonicalizedHeaders(request), 
     GetCanonicalizedResource(request.RequestUri, StorageAccount), 
     md5 
     ); 

??? //string MessageSignaturePut= String.Format("{0}\n\n{1}\n\n{2}{3}", 
    // method, 
    // "text/plain; charset=UTF-8", 
    // GetCanonicalizedHeaders(request), 
    // GetCanonicalizedResource(request.RequestUri, StorageAccount) 
    // ); 

    byte[] SignatureBytes = System.Text.Encoding.UTF8.GetBytes(MessageSignature); 

    System.Security.Cryptography.HMACSHA256 SHA256 = 
     new System.Security.Cryptography.HMACSHA256(Convert.FromBase64String(StorageKey)); 

    string signature = Convert.ToBase64String(SHA256.ComputeHash(SignatureBytes)); 

    string AuthorizationHeader = "SharedKey " + StorageAccount 
     + ":" + Convert.ToBase64String(SHA256.ComputeHash(SignatureBytes)); 

    return AuthorizationHeader; 
} 

Answer 1

Bitte beachten Sie das folgende Code-Snippet. Dies sollte für Sie arbeiten.

void UploadBlobWithRestAPI() { 

    string storageKey = "<your access key here>"; 
    string storageAccount = "<your storage account name here>";  
    string containerName = "<your container name here>"; 
    string blobName = "test.txt"; 

    string method = "PUT"; 
    string sampleContent = "This is sample text."; 
    int contentLength = Encoding.UTF8.GetByteCount(sampleContent); 

    string requestUri = $"https://{storageAccount}.blob.core.windows.net/{containerName}/{blobName}"; 

    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestUri); 

    string now = DateTime.UtcNow.ToString("R"); 

    request.Method = method; 
    request.ContentType = "text/plain; charset=UTF-8"; 
    request.ContentLength = contentLength; 

    request.Headers.Add("x-ms-version", "2015-12-11"); 
    request.Headers.Add("x-ms-date", now); 
    request.Headers.Add("x-ms-blob-type", "BlockBlob"); 
    request.Headers.Add("Authorization", AuthorizationHeader(method, now, request, storageAccount, storageKey, containerName, blobName)); 

    using (Stream requestStream = request.GetRequestStream()) { 
     requestStream.Write(Encoding.UTF8.GetBytes(sampleContent), 0, contentLength); 
    } 

    using (HttpWebResponse resp = (HttpWebResponse)request.GetResponse()) { 
     MessageBox.Show(resp.StatusCode.ToString()); 
    } 

} 

public string AuthorizationHeader(string method, string now, HttpWebRequest request, string storageAccount, string storageKey, string containerName, string blobName) { 

    string headerResource = $"x-ms-blob-type:BlockBlob\nx-ms-date:{now}\nx-ms-version:2015-12-11"; 
    string urlResource = $"/{storageAccount}/{containerName}/{blobName}"; 
    string stringToSign = $"{method}\n\n\n{request.ContentLength}\n\n{request.ContentType}\n\n\n\n\n\n\n{headerResource}\n{urlResource}"; 

    HMACSHA256 hmac = new HMACSHA256(Convert.FromBase64String(storageKey)); 
    string signature = Convert.ToBase64String(hmac.ComputeHash(Encoding.UTF8.GetBytes(stringToSign))); 

    String AuthorizationHeader = String.Format("{0} {1}:{2}", "SharedKey", storageAccount, signature); 
    return AuthorizationHeader; 
} 

und der Verkehr von Fiddler erfasst, wie folgt: